package com.zj.study.controller;

import com.zj.study.config.util.LoadBalancer;
import com.zj.study.entities.CommonResult;
import com.zj.study.entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 *
 */
@RestController
@Slf4j
public class OrderController {

    //    public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Value("${server.port}")
    private String serverPort;
    @Resource
    private LoadBalancer loadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;

    @PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create",
                payment, CommonResult.class);
    }

    @GetMapping(value = "/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("PAYMENT-SERVICE");

        if (instances == null || instances.size() <= 0) {
            return null;
        }

        ServiceInstance serviceInstance = loadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();
        System.out.println(uri);
            return restTemplate.getForObject(PAYMENT_URL + "/payment/lb", String.class);

    }

    // ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }
}
